154 PROCEEDINGS OF THE ACADEMY OF [Feb., 



1. Lithobius chumasanus sp. nov. 



Description. — Ackilts deep-brown to mahogany, legs paler distally, 

 antenna paler distally or not; robust, head and dorsum roughened, 

 more strongly so caudally; entire body rather sparsely pilose with 

 very short hairs, but the last ventral plates more densely provided with 

 longer hairs; antennae on basal joints very sparsely, elsewhere sub- 

 densely, clothed with straight stiff hairs; legs sparsely hirsute, the last 

 tarsal joint of anterior legs more densely so beneath. Head rounded, 

 very nearly equal in length and width. Antennae moderate, article? 

 42-46, except the first ones short, the ultimate in length about equal 

 ing the two preceding together. Ocelli on each side 16-21, arranged 

 in 4 or 5 longitudinal series, large and distinct, the single ocellus ver;y 

 large and vertically oval. Prosternal teeth 6-6, 7-7, large and sub- 

 equal. Spines of first legs 2, 3, 3; penult legs with two claws, spines 



1, 3, 3, 1 ; anal legs with two claws, spines 1, 3, 3, 1 ; last 3 pairs of coxae 

 armed laterally and also dorsally with a stout spine. Coxal pores 

 7, 8, 8, 6-8, 8, 8, 7, transverse, oval in immature specimens. Gonopods 

 of ? : claw stout, bipartite, the lobes equal or nearly so, sometimes 

 with a very sifiall third lobe on the inner side of claw; basal spines, 

 stout, pointed, flattened distally. 



Length of body 22-23 mm.; width of 8th dorsal plate 3.3-3.4 mm., 

 length of antennae 10 mm. ; length of anal legs 10.5 mm. 



Habitat. — Santa Barbara, Cal. 



Etymology. — From Chumashans, a tribe of Indians of southern Cali- 

 fornia, including those of the Santa Barbara mission. 



2. Lithobius sierravagus sp. nov. 



Description. — Chestnut, legs and antennae lighter, the latter pale 

 distally (specimens from Tiuckee, Cal.) to mahogany, with the legs 

 and antennae dark, both legs and antennae rufous distally (specimens 

 from Oregon City, Oreg.); head and dorsum much roughened, espe- 

 cially so the posterior plates; dorsum glabrous or nearly so; venter 

 very sparsely provided with hairs, the anal and genital segments sub- 

 densely so; legs sparsely pilose; antennae uniformly clothed with fine, 

 straight hairs. Head scarcely wider than long (14: 13.5), the portion 

 back of eyes subquadrangular. Antennae: articles 23-27, rarely 20. 

 except the first ones, short, the ultimate mostly a little shorter than 

 the two preceding together, the number of articles usually in inverse 

 proportion to length of antennae. Ocelli on each side : 16-21, in 4 curv- 

 ing series, mostly 1+6, 5, 4, 3 or 14-5, 6, 3, 2. Prosternal teeth: 

 8-8 to 13-13. black and conical. Spines of the first legs 2, 3, 2; penult 



